# SDR ASAA2017110422425

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2017
- Submitted: November 6, 2017
- Operation: Air carrier
- Aircraft: [N419AS](https://openairdocs.org/aircraft/N419AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41734
- Aircraft time: 18,446 hours, 6,069 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 16MYN9
- Condition: Failed
- Location: Flight Deck
- Part time: 35,916 hours, 12,871 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017110422425

## Discrepancy

FIRST OFFICER COURSE WINDOW BLANKED. COURSE ON ND WORKS NORMAL.  ACFT GROUNDED.  REMOVED AND REPLACED MCP IAW AMM 22-11-34-000-801 AND 22-11-34-400-801. PERFORMED MCP INSTALLATION TEST IAW AMM 22-11-34-400-801.  DFCS LRU REPLACEMENT TEST FOR MCP IAW AMM 22-11-00/201. ALL TESTS PASSED.

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